Straight-bar knitting-machine.



PATENTED NOV. 8, 1904.

A. WOLLER. 4 STRAIGHT BAR KNITTING MACHINE.

APPLICATION FILED JAN. 2. 1903.

N0 MODEL.

YVi?n eases UNITED STATES Patented November 8, 1904.

ALBAN VVOLLER, OF HORMERSDORF, GERMANY.

STRAIGHT-BAR KNITTING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 774,299, dated November 8, 1904.

Application filed January 2, 1903- ]0 IZZZ w/wnt it 777/011] concern.-

Be it known that I, ALBAN VVOLLER, a subject of the German Emperor, and a resident of Hormersdorf, near Thalheim, in the Kingdom of Saxony and Empire of Germany, have invented certain new and useful Improvements in Straight-Bar Knitting-Machines, of which the following is a specification.

This invention relates to a mechanical arrangement on straight-bar knitting-machines for the manufacture of regular stocking and glove goods with open-work patterns which cover the entire breadth of the goods also at the narrowed parts and the upper wider part of the fabric, extending close to the two lateral seam edges. For this purpose an openwork knitting-machine is employed with two or more pattern-needle systems, the operating mechanisms of which are adapted to work independently from each other.

Those parts of a straight-bar knitting-machine which come more particularly into consideration in connection with this invention are shown in the annexed drawings, in which- Figure 1 is a vertical cross-section through that part of the straight-bar knitting-machine called the open-work machine. Fig. 2 is a front view thereof with the mechanism for operating the narrowing mechanism, and Fig. 3 shows part of Fig. 2 during another moment of action.

Figs. 1 and 2 represent as an example an arrangement in which a number of point-bars 1' 2 3' 1 are fastened to four rods 1 2 3 41-, the said bars having the open-work points 7 7 7 7 '7 at their lower ends. From Fig. 1 it is visible that the needles 7 are arranged in one row; but they are distributed over four clifferent point-bars 1 2 3' 1, as indicated in Fig. 2. All points 7 are fixed to the bar 1, all points 7 to the bar 2, all points 7 to 3, and all points 7* to 4. The points 7 7 7 7* are always moved together in the direction of the'arrows a Z), Fig. 1; but they have any desired different movements in the directions of the arrowsc and (Z, Fig. 2, since the rods 1 2 3 4 are driven by mechanisms (not shown) independent from each other. The object of this is to produce four-fold varying patternthat is to say, loops may be transferred to the the end of the rod '6.

Serial No. 137,556. (No model.)

place the rods 5 and 6 in the direction of the.

arrows 0 (Z, Fig. 2. The worm 9 has bearing in the machine-frame and engages a female screw fixed to the support 10. When the said worm is rotated by means of the crank 11 or the ratchet-wheel 12. the support 10 is therefore moved to the right or the left. If moved to the left, it displaces the bar 6 in the direc tion .of the arrow 0, since the head-plate 14 of the slide 13 on said support abuts against If the support 10 is moved to the right, the rod 6 moves in the direction of the arrow (Z, since one end of the spring 15 is fastened to the support and the other end to the rod 6. Around a pin 16, fixed to the support 10, swings a lever 17 the upper end of which by means of a groove engages a pin 18, fixed to the slide 13. The lower beveled end of the said lever extends into an aperture in thesupport 10 toward the beveled end of a bolt 19. The latter is adapted to be moved into the position in Fig. 3, and by this means the lever 17 is compelled to rotate into a vertical position. In consequence thereof the slide 13 is moved to the left, and its plate 14: moves the rod 6, to which is fixed the bar 6, with the narrowing-needles 8 to the left in the direction of the arrow 0. The bolt 19 by means of its frame like lower part 21 is adapted to slide horizontally on a pin 20, which carries a roller 24 and is fixed to the end of a lever 23, pivoted 'at 22. Mounted on a pin 25, fixed to the machineframe, is a ratchet-wheel 26. This wheel is provided with eight teeth and is operated by a pawl 27, which performs one stroke during each revolution of the main shaft, and thereby rotates the ratchet for the distance of one tooth. A resilient pawl 28 serves to hold the ratchet-wheel 26 in the position into which it is moved by. the pawl27. Rigidlyoonnected to the ratchet-wheel 26 is a pair of cams 29 30, adapted to engage the roller 20 and to lift 5 same with the lever 23 and slide 19 21 when l rotated about the pin 25.

The process of working takes place in two stagesnamely, the production of the pattern, for which purpose the needles 7 are operated while the needles 8 remain at rest and the narrowing during which the needles8 are operative and the needles 7 inoperative. For forming the pattern the mechanism has the position shown in Fig. 2, While for narrowing the position is that shown in Fig. 3. These two positions differ from each other in the fact that in Fig. 2 the narrowing pointbar 6 is so far displaced toward the right in the direction of the arrow (Z and the bar 5' so far displaced to the left in the direction of the arrow 0 that the narrowing-needles 8 are quite outside the fabric and cannot therefore project into and damage the latter. In Fig. 3, on the other hand, the slide 19 is moved upward and has displaced the lower end of the lever 17 toward the right. The slide 13 is therefore displaced toward the left hand and has moved the bar 6 and narrowing point-bar 6 in the direction of the arrow 0 toward the place where the narrowingneedles are to take effect, the object of the invention being to remove the narrowingneedles 8 sufficiently from the fabric when they are not required, so that they cannot damage the fabric, and to bring the said needles very rapidly to their operative position when l they are required. 1

Having now fully described my invention, I declare that what I claim is 1 1. An open-work and narrowing mechanism for flat-bar knitting-machines, comprising a narrowing-point-bar support, a screw for moving said support, a slide mounted in said support, a head-plate mounted on said slide and adapted to engage with the narrowing point-bars, and means for reciprocating said slide, comprising a spring or the like, a pivoted lever having one end in engagement with said slide,and having the other end beveled, a bolt adapted to engage with the beveled end of said lever to swing said lever to a vertical position, and means for operating said bolt.

2. An openwork and narrowing mechanism for flat-bar knitting-machines, comprising a narrowing-point-bar support, means for moving said support, a slide mounted in said sup port, having one end adapted to engage with the narrowing point-bars, a spring for holding said slide in normally retracted position, a lever pivoted to said support having one end engaging with said slide, a bolt for swinging said lever to throw the slide into a forward or projected position, said bolt being provided with a slot in its lower end, a pivoted arm having its free end in engagement with said slot, a roller on said arm, a ratchetwheel, a cam on said ratchet-wheel adapted to engage with said roller to operate the bolt, and a pawl for turning said ratchet-wheel, substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

ALBAN WOLLER.

WVitnesses:

MORRIS LIPMAN, FREDERICK J. SIETZMAN. 

